AMD Instinct MI300A vs NVIDIA GeForce RTX 5090 Mobile Comparison

Head-to-Head Benchmarks

The benchmark database contains no direct head-to-head comparison results between the AMD Instinct MI300A and the NVIDIA GeForce RTX 5090 Mobile. The head-to-head benchmark array is empty, and the win counters for both sides are zero. This absence of paired testing data means that any direct performance comparison must be assembled from the broader measurement context available in the database.

For the NVIDIA GeForce RTX 5090 Mobile, the recorded data shows a substantial benchmark footprint. The 3DMark Steel Nomad DX12 test yields a score of 5871. In Geekbench OpenCL, the card records 201834 points, and in Geekbench Vulkan it achieves 198405 points. The PassMark suite shows a G3D score of 30034, a GPU compute score of 13401, and DirectX 9, 10, 11, and 12 results of 324, 183, 269, and 138 respectively. The G2D score is 1057.

The average benchmark score for the RTX 5090 Mobile across all recorded tests is 45152. This places it at the 84th percentile among all GPUs in the database. Its nearest rivals in the database include the AMD Radeon Pro 5500 XT with an average score of 45384, which is 0.5 percent higher, and the NVIDIA GeForce RTX 4070 Ti with an average score of 44795, which is 0.8 percent lower. The Intel Arc A730M records 45592, sitting 1 percent above, and the NVIDIA RTX 5880 Ada Generation scores 45972, which is 1.8 percent higher.

The AMD Instinct MI300A has no recorded benchmark scores in the database. Its average benchmark score is zero, and its percentile versus all GPUs is 50, which reflects a neutral position in the absence of measured results. The nearest rivals array for the MI300A is empty, meaning the database contains no comparative performance points for this part.

The absence of head-to-head data means the only quantitative comparison available is the RTX 5090 Mobile's average score of 45152 against the MI300A's zero recorded average. The MI300A's percentile of 50 is purely a placeholder, not a measured performance indicator. The data cannot support a claim that one part outperforms the other in any specific workload, because the MI300A simply has no entries in the benchmark database.

The RTX 5090 Mobile's 84th percentile ranking indicates that, among all GPUs with recorded results, it sits in the upper tier. Its nearest rivals are all within roughly 2 percent of its average score, showing a tight cluster of similar-performing parts. The MI300A, by contrast, has no such cluster, and its percentile of 50 cannot be interpreted as a mid-range result because it is not derived from any actual test.

The Verdict

From the recorded data alone, the NVIDIA GeForce RTX 5090 Mobile is the only part with measurable benchmark evidence. Its average score of 45152 and 84th percentile placement provide concrete performance context. The AMD Instinct MI300A has no benchmark results, so the database offers no basis for selecting it on measured performance.

The RTX 5090 Mobile's nearest rivals sit between 1.8 percent above and 0.8 percent below its average score. This indicates that its performance is comparable to the RTX 4070 Ti, the Radeon Pro 5500 XT, the Intel Arc A730M, and the RTX 5880 Ada Generation. The MI300A cannot be placed in this or any other performance tier because no scores exist.

For a user choosing strictly on the basis of the benchmark database, the RTX 5090 Mobile has the only verifiable performance profile. The MI300A's lack of recorded results means it cannot be recommended over the RTX 5090 Mobile in any scenario where benchmark data is the deciding factor. The database does not indicate that the MI300A is slower, only that it is unmeasured.

The percentile figures reinforce this: the RTX 5090 Mobile sits at 84, well above the midpoint, while the MI300A sits at 50 with no supporting tests. The verdict from the data is straightforward: the RTX 5090 Mobile is the only part with demonstrated performance, and the MI300A remains an unknown quantity in this database.

Architecture Differences

The AMD Instinct MI300A and the NVIDIA GeForce RTX 5090 Mobile diverge fundamentally at the architecture level. The MI300A uses CDNA 3.0, built on the Aqua Vanjaram chip, while the RTX 5090 Mobile uses Blackwell 2.0, built on the GB203 chip. Both are manufactured by TSMC on a 5 nm process, but the similarities end there.

The MI300A is an Instinct-series accelerator for data center compute, whereas the RTX 5090 Mobile is a GeForce 50-series mobile graphics processor. The MI300A has no display outputs, no DirectX, OpenGL, or Vulkan support, and uses an OAM Module slot. The RTX 5090 Mobile has portable device dependent display outputs and supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

The transistor counts differ sharply. The MI300A packs 153,000 million transistors on a 1017 mm² die, yielding a density of 150.4 million transistors per square millimeter. The RTX 5090 Mobile contains 45,600 million transistors on a 378 mm² die, with a density of 120.6 million per square millimeter. The MI300A's die is nearly three times larger and holds more than three times the transistors.

Memory architecture is another major split. The MI300A uses 128 GB of HBM3 on an 8192-bit bus, delivering 5.32 TB/s of bandwidth. The RTX 5090 Mobile uses 24 GB of GDDR7 on a 256-bit bus, delivering 896.0 GB/s. The MI300A's memory bandwidth is roughly six times higher, reflecting its compute-oriented design. The RTX 5090 Mobile's memory clock runs at 1750 MHz with 28 Gbps effective, while the MI300A's memory runs at 1300 MHz with 5.2 Gbps effective.

The MI300A has 14592 shading units and 912 texture mapping units, but zero ROPs, zero ray tracing cores, and zero tensor cores. Its pixel rate is 0 MPixel/s, and its texture rate is 1,915.2 GTexel/s. The RTX 5090 Mobile has 10496 shading units, 328 TMUs, 112 ROPs, 82 ray tracing cores, and 328 tensor cores. Its pixel rate is 169.7 GPixel/s, and its texture rate is 496.9 GTexel/s.

The MI300A's FP32 throughput is 61.29 TFLOPS, while the RTX 5090 Mobile delivers 31.80 TFLOPS. The RTX 5090 Mobile also lists FP16 at 31.80 TFLOPS with a 1:1 ratio, while the MI300A has no recorded FP16 figure. The MI300A's compute focus is clear: it trades away graphics features entirely for raw floating-point throughput.

Specification Differences

The two parts differ across nearly every specification field in the database. The process node is identical at 5 nm from TSMC, but the chip, architecture, generation, and series names all diverge. The MI300A belongs to the Instinct (MIx) generation, while the RTX 5090 Mobile belongs to the GeForce 50 Mobile generation.

Clock speeds show a notable split. The MI300A has a base clock of 1000 MHz and a boost clock of 2100 MHz. The RTX 5090 Mobile has a base clock of 990 MHz and a boost clock of 1515 MHz. The MI300A's boost clock is substantially higher, but the RTX 5090 Mobile's lower clocks are paired with a much lower power envelope.

Power draw is a defining difference. The MI300A has a TDP of 750 W and a suggested PSU of 1150 W. The RTX 5090 Mobile has a TDP of 95 W and no suggested PSU listed. This means the MI300A consumes roughly eight times the power of the RTX 5090 Mobile, a gap that reflects their entirely different deployment contexts.

Memory capacity, type, bus width, and bandwidth all favor the MI300A. It has 128 GB of HBM3 versus 24 GB of GDDR7, an 8192-bit bus versus 256-bit, and 5.32 TB/s versus 896.0 GB/s. The RTX 5090 Mobile has display outputs, while the MI300A has none. The bus interface is PCIe 5.0 x16 for both.

The MI300A's slot width is OAM Module, and it has no power connectors. The RTX 5090 Mobile's slot width is IGP, also with no power connectors. The RTX 5090 Mobile has a production status of Active, while the MI300A has none recorded. The release dates differ: the MI300A launched on 2023-12-05, and the RTX 5090 Mobile on 2025-03-26. The MI300A's predecessor is Radeon Instinct, and the RTX 5090 Mobile's predecessor is GeForce 40 Mobile. Neither part has a successor listed.

The shading unit count favors the MI300A at 14592 versus 10496, as do TMUs at 912 versus 328. The RTX 5090 Mobile counters with 112 ROPs versus zero, 82 ray tracing cores versus zero, and 328 tensor cores versus zero. The MI300A has no DirectX, OpenGL, or Vulkan API support, while the RTX 5090 Mobile supports all three.

FAQ

Q: Which processor has higher FP32 compute performance?

A: The AMD Instinct MI300A delivers 61.29 TFLOPS of FP32 performance, while the NVIDIA GeForce RTX 5090 Mobile delivers 31.80 TFLOPS. The MI300A's FP32 figure is roughly double that of the RTX 5090 Mobile.

Q: How does memory bandwidth compare between the two?

A: The MI300A has 5.32 TB/s of bandwidth from 128 GB of HBM3 on an 8192-bit bus. The RTX 5090 Mobile has 896.0 GB/s from 24 GB of GDDR7 on a 256-bit bus. The MI300A's bandwidth is approximately six times higher.

Q: What is the power consumption difference?

A: The MI300A has a TDP of 750 W with a suggested PSU of 1150 W. The RTX 5090 Mobile has a TDP of 95 W and no suggested PSU listed. The MI300A consumes roughly eight times the power.

Q: Does the MI300A support ray tracing?

A: No. The MI300A has zero ray tracing cores and zero tensor cores. The RTX 5090 Mobile has 82 ray tracing cores and 328 tensor cores.

Q: What is the average benchmark score for each part?

A: The RTX 5090 Mobile has an average benchmark score of 45152 and sits at the 84th percentile. The MI300A has an average benchmark score of zero and sits at the 50th percentile with no recorded tests.

Q: Which part has more shading units?

A: The MI300A has 14592 shading units, while the RTX 5090 Mobile has 10496 shading units. The MI300A also has more texture mapping units at 912 versus 328.

Where Each One Wins

The recorded data shows that the NVIDIA GeForce RTX 5090 Mobile wins in every measurable benchmark category, because it is the only part with recorded scores. Its 3DMark Steel Nomad DX12 score of 5871, Geekbench OpenCL score of 201834, and Geekbench Vulkan score of 198405 all stand as concrete performance data points. The PassMark suite adds G3D at 30034, GPU compute at 13401, and DirectX scores ranging from 138 to 324.

The RTX 5090 Mobile also wins on graphics feature support. It has 112 ROPs, 82 ray tracing cores, 328 tensor cores, and API support for DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. Its pixel rate of 169.7 GPixel/s and texture rate of 496.9 GTexel/s are functional figures, while the MI300A's pixel rate is 0 MPixel/s.

The AMD Instinct MI300A wins on raw compute specifications. Its FP32 throughput of 61.29 TFLOPS is higher than the RTX 5090 Mobile's 31.80 TFLOPS. Its texture rate of 1,915.2 GTexel/s is nearly four times the RTX 5090 Mobile's 496.9 GTexel/s. Its memory capacity of 128 GB, bus width of 8192 bits, and bandwidth of 5.32 TB/s all exceed the RTX 5090 Mobile's corresponding figures of 24 GB, 256 bits, and 896.0 GB/s.

The MI300A also wins on sheer scale. It holds 153,000 million transistors on a 1017 mm² die, compared to 45,600 million transistors on a 378 mm² die. Its boost clock of 2100 MHz exceeds the RTX 5090 Mobile's 1515 MHz, and its base clock of 1000 MHz is slightly above 990 MHz.

The use-case split is clear from the data. The RTX 5090 Mobile is the choice for any workload requiring graphics output, ray tracing, tensor operations, or standard API compatibility. Its 84th percentile ranking and average score of 45152 place it in a verified performance tier among its nearest rivals. The MI300A, with no recorded benchmarks and no graphics features, is positioned for compute-heavy tasks where raw FP32 throughput, massive memory capacity, and extreme bandwidth are the priorities. Its 750 W TDP and OAM Module form factor indicate a data center deployment, while the RTX 5090 Mobile's 95 W TDP and IGP form factor indicate a portable device.

The database does not provide direct comparisons, so each part wins in its own domain based on the specifications and measurements available. The RTX 5090 Mobile has the only recorded performance results, while the MI300A has the only leading compute specifications.